Disease, habitat fragmentation and conservation

McCallum, H. and Dobson, A. (2002) Disease, habitat fragmentation and conservation. Proceedings of The Royal Society of London Series B-biological Sciences, 269 1504: 2041-2049. doi:10.1098/rspb.2002.2079

Author McCallum, H.
Dobson, A.
Title Disease, habitat fragmentation and conservation
Journal name Proceedings of The Royal Society of London Series B-biological Sciences   Check publisher's open access policy
ISSN 0962-8452
Publication date 2002
Sub-type Article (original research)
DOI 10.1098/rspb.2002.2079
Volume 269
Issue 1504
Start page 2041
End page 2049
Total pages 9
Place of publication London
Publisher The Royal Society
Collection year 2002
Language eng
Subject C1
270708 Conservation and Biodiversity
770703 Living resources (flora and fauna)
06 Biological Sciences
Abstract Habitat loss and the resultant fragmentation of remaining habitat is the primary cause of loss of biological diversity. How do these processes affect the dynamics of parasites and pathogens? Hess has provided some important insights into this problem using metapopulation models for pathogens that exhibit 'S-I' dynamics; for example, pathogens such as rabies in which the host population may be divided into susceptible and infected individuals. A major assumption of Hess's models is that infected patches become extinct, rather than recovering and becoming resistant to future infections. In this paper, we build upon this framework in two different ways: first, we examine the consequences of including patches that are resistant to infection; second, we examine the consequences of including a second species of host that can act as a reservoir for the pathogen. Both of these effects are likely to be important from a conservation perspective. The results of both sets of analysis indicate that the benefits of corridors and other connections that allow species to disperse through the landscape far outweigh the possible risks of increased pathogen transmission. Even in the commonest case, where harmful pathogens are maintained by a common reservoir host, increased landscape connectance still allows greater coexistence and persistence of a threatened or endangered host.
Keyword Biology
Habitat Loss
Reservoir Species
Population Biology
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Public Health Publications
School of Biological Sciences Publications
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Created: Tue, 14 Aug 2007, 17:26:28 EST